A couple of years ago, the folks at cloud backup provider Backblaze made their Backblaze Storage Pod design an open source project. For around US$7900, you could make your own 67 TB RAID 6 array, and combining 15 of the arrays would give you about a petabyte of storage at a cost of around $117,000. Now Backblaze has updated their project for even more storage at a lower cost.
In a post on the Backblaze blog, the